Cream separator



Patented Oct.. 2, 1923.

UNiTED STATES lanza- PATENT. oFFlcE. i

FRANK J. KBISTOFEK, F ST. PAUL, MINNESOTA, ASSIGNOR '10 BROWN & BIGELOW, OF

ST. PAUL, MINNESOTA, A.

CORPORATION OF MINNESOTA.

CREAM SEPABATOR.

Application tiled June 24, 1921. Serial N. 480,169.y

T o all whom'z't may concern:

Be it known that I, FRANK J. KnIsToFEK, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State a ol Minnesota, have invented a new and use-1 ful Improvement in Cream separators, of which the following is a specification.

My invention relates to a cream separator which is designed to be used in connection with milk bottles for removing thecream from the top of the milk without disturbing the contents of the bottle to 4the extent of mixing the cream with the milk. The same is designed so that it can be held conven- Iie iently in the hand vhile being inserted in the neck of the bottle to the depth of the cream. After the insertion of the separator into the bottle by holding the outer end of the separator closed with the finger the 2o cream which-has entered the separator will remain therein and can be readily removed from the bottle.

The invention includes means' adapted to form a receptacle which is designed to freely E5 receive liquid such as cream, through openings formed in while the other en d is open. lWhen the cham- ,berI of the separator is inserted into the cream to the depth desired it is closed on the B0 upper end with the finger, the openings on the inner end thereof are such as to'prevent the cream from being discharged out of the separator. In this manner the cream can be practically entirely removed from the milk bottle without extensively disturbing or mixing the milk. Itis an essential detail of the invention that the openings in the lower end of the separator be so arranged and of such proportions as to prevent the cream from 60 being discharged; so that the separator can hold thecream within itself by vacuum when its upper end is closed. When the upper end of the separator is opened the cream or liquid held therein will be readily discharged es out of the lower end of the same.

In the drawings forming a part of this specification Figure 1 is a side sectional elevation of my separator illustrating the upper portion of a milk bottle also in section. Figure 2 is a view 0n ure 1;

Figure 3 is a bottom viewot the separator illustrated in Figure 1. se Figure 4 illustrates a modified form of the the bottom of the separator in the chamber( B of the line 2-2 Figinvention showing the cream separator inserted in a milk bottle positioned to remove the cream.

The drawings illustrate a cream separator A which is formed with a cylindrical body portion 10 having an upper end wall ll-and a lower end 12.

The upper end 11 is secured to the cylindrical portion 10 to form an air-tight joint and is provided 'with a tube 13 which extends from the end 11. A handle member 14 is secured to the cover or end 11 and the tubular member 13. The tubular member 13 `forms a 4passageway 15 into one end of the cylindrical member 10.. This passageway can be closed by pressing the finger on theV open end 16 of the same 'to make one end ofthe chamber B ofthe separator A airtight.

The member orf'end 12 is formed cupshaped in a manner to position the wall of the same within the chamber B inward from the end of the cylindrical member 10 while the edge 17 of the same extends around and over the edge of the member 10 so that an air-tight joint can be formed between the edges of the member 10 and the member 12 without forming an enlarged ridge on the outer surface of the member 10 to which the cream or other liquid would adhere if the lower edge of' the separator A was not smooth. With this construction only the thickness of the metal or members forming the separator A project from the lower edge ot the same.

The member 12 is formed with a series of openings 18, which are positioned and proportioned in size to form the'desired vacuum within the chamber B when the end 16 of the tubular member 13 is closed to hold a liquid of the consistency oix cream within the separator chamber B so that it can be removed from a milk bottle or other receptacle. Thus the vacuum the separator A holds 10o the cream from running out of the openings 18 while the separator is withdrawn from vthe bottle C and this operation can be repeated until practically all of the cream is withdrawn from the bottle without materially disturbing the milk.

A feature of this invention resides in the simplicityT of the device and vin its design which allows the readily visible cream in an ordinary milk bottle to be withdrawn with 1w a very little mixing of the cream with the skim milk. The greater portion of the cream is removed in the first operation and if it is desiredto remove the remaining amount of cream from the milk it 1s onl necessary to repeat the, tirst operation., he handle it provides means by which the separator may be firmly and conveniently held in the hand while one nger can he used to close the opening 16.

'lhe separator D illustrated in Figure d is formed with acylindrical body portion 10 and upper and lower ends il and 12. This separator is not provided with the handle or tulmilarmember 13 but has an opening 20 in the end ll which is adapted to' be closed by ones nger after the separator is inserted the desired de th into the cream in the bottle C and to orm the necessary vacuum within-the' chamber B to hold the cream in the separator D while it is being removed from the hottle.

'lhe separator D operates in the same manner as the separator A, but being more simplied in not having the handle or tubular member which projects from the upper end of the separator A. lin using this separator it is engaged at its upper end and after having been inserted to the desired depth into the' cream the opening 20 is closed with the linger while withdrawing it from the milk bottle.

Ubviously a cream separator of this nature forms a desirable house utility, particularly as the majority of the milk delivered to the householder is in bottles. For

sanitary reasons it is not desirable to rel move the cream from the bottle until it is wanted for use.' lllfith my separator the meneer householder can remove the cream very quickly from the bottle atv any time, and

it is so constructed that it can be sterilized after it is used, thus doing away entirely with the awkward method which is now neoessaryrto try and separate the cream from the milk in removing it from an ordinaryv milk hottie. l

ln accordance with the patent statutes l have described the principles of operation ot my invention together with the apparatus which ll now consider to represent the best embodiment thereof, but l'. wish to have it understood that l desire to protect my invention within the scope oi the for claims 2 lowing .1; cream separator including a c lindrical hollow body portion, .a disk-li e end wall secured to one' end thereof, an opening. formed in said wall, a perforated disk-like' wall spaced from the other end 'of said body portion to position it within the end of said body portion in a manner to form a recess in that end of said cream FRANK d. KltlS'lOlTEK. 

